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<h1>Gio::IOStream Class Reference<br/>
<small>
[<a class="el" href="group__Streams.html">Stream Classes</a>]</small>
</h1><!-- doxytag: class="Gio::IOStream" --><!-- doxytag: inherits="Glib::Object" -->
<p>Inherits <a class="el" href="classGlib_1_1Object.html">Glib::Object</a>.</p>
<p>Inherited by <a class="el" href="classGio_1_1FileIOStream.html">Gio::FileIOStream</a>.</p>
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Collaboration diagram for Gio::IOStream:</div>
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<div class="center"><img src="classGio_1_1IOStream__coll__graph.png" border="0" usemap="#Gio_1_1IOStream_coll__map" alt="Collaboration graph"/></div>
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<p><a href="classGio_1_1IOStream-members.html">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a1257d3a0df6edf25cf1088e4be7144e2">~IOStream</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GIOStream* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a6e8d13f8095555cecbe0d59f1542893f">gobj</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Provides access to the underlying C GObject. <a href="#a6e8d13f8095555cecbe0d59f1542893f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const GIOStream* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a94eb81fa811399ece0ef743cd9d178ae">gobj</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Provides access to the underlying C GObject. <a href="#a94eb81fa811399ece0ef743cd9d178ae"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GIOStream* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a632594c5b02e0311448e79f6d495c65a">gobj_copy</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. <a href="#a632594c5b02e0311448e79f6d495c65a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a>< <a class="el" href="classGio_1_1InputStream.html">InputStream</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#afab74f0f339afb505556f6cb8b8c2b45">get_input_stream</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Gets the input stream for this object. <a href="#afab74f0f339afb505556f6cb8b8c2b45"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a>< <a class="el" href="classGio_1_1OutputStream.html">OutputStream</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#acdea8fc29d817070fa9cca124f398930">get_output_stream</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Gets the output stream for this object. <a href="#acdea8fc29d817070fa9cca124f398930"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#ae22ea1e4e3cd6db48b5e012f35a2306d">close</a> (const <a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a>< <a class="el" href="classGio_1_1Cancellable.html">Cancellable</a> >& cancellable)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Closes the stream, releasing resources related to it. <a href="#ae22ea1e4e3cd6db48b5e012f35a2306d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a7d9c63eb525827d27f897d6823f719a8">close</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a289fe0ef58e44117952a2e01985afdd7">close_async</a> (const <a class="el" href="namespaceGio.html#aecaa02709f9ab83fa2b36d2571665cbe">SlotAsyncReady</a>&<a class="elRef" href="../../../libsigc++-2.0/reference/html/classsigc_1_1slot.html">slot</a>, const <a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a>< <a class="el" href="classGio_1_1Cancellable.html">Cancellable</a> >& cancellable, int io_priority=Glib::PRIORITY_DEFAULT)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a41451e389068b3a61245b43695186ee6">close_async</a> (const <a class="el" href="namespaceGio.html#aecaa02709f9ab83fa2b36d2571665cbe">SlotAsyncReady</a>&<a class="elRef" href="../../../libsigc++-2.0/reference/html/classsigc_1_1slot.html">slot</a>, int io_priority=Glib::PRIORITY_DEFAULT)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a205a044f155178460336bd6efd05554c">close_finish</a> (const <a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a>< <a class="el" href="classGio_1_1AsyncResult.html">AsyncResult</a> >& result)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Closes a stream. <a href="#a205a044f155178460336bd6efd05554c"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a32d887d5d205566fe1cdfd0bf4176a8d">is_closed</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Checks if a stream is closed. <a href="#a32d887d5d205566fe1cdfd0bf4176a8d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#afecb3079c5a4adf9fe186b4a44923da3">has_pending</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Checks if a stream has pending actions. <a href="#afecb3079c5a4adf9fe186b4a44923da3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a7217e0c7ef1659a8b293a81e5b2e95e2">set_pending</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets <em>stream</em> to have actions pending. <a href="#a7217e0c7ef1659a8b293a81e5b2e95e2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#ac15dc0ec5596a9bb5ee174ea70a2b59d">clear_pending</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Clears the pending flag on <em>stream</em>. <a href="#ac15dc0ec5596a9bb5ee174ea70a2b59d"></a><br/></td></tr>
<tr><td colspan="2"><h2>Related Functions</h2></td></tr>
<tr><td colspan="2"><p>(Note that these are not member functions.) </p>
<br/><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a>< <a class="el" href="classGio_1_1IOStream.html">Gio::IOStream</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classGio_1_1IOStream.html#a13101385680c3857e7027d78e1f6259a">wrap</a> (GIOStream* object, bool take_copy=false)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A <a class="el" href="namespaceGlib.html#a671306f4a3a0cae5ab4d7a9d54886592">Glib::wrap()</a> method for this object. <a href="#a13101385680c3857e7027d78e1f6259a"></a><br/></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<dl class="since_2_22"><dt><b><a class="el" href="since_2_22.html#_since_2_22000024">Since glibmm 2.22:</a></b></dt><dd></dd></dl>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a1257d3a0df6edf25cf1088e4be7144e2"></a><!-- doxytag: member="Gio::IOStream::~IOStream" ref="a1257d3a0df6edf25cf1088e4be7144e2" args="()" -->
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<td class="memname">virtual Gio::IOStream::~IOStream </td>
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<td><code> [virtual]</code></td>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="ac15dc0ec5596a9bb5ee174ea70a2b59d"></a><!-- doxytag: member="Gio::IOStream::clear_pending" ref="ac15dc0ec5596a9bb5ee174ea70a2b59d" args="()" -->
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<td class="memname">void Gio::IOStream::clear_pending </td>
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<p>Clears the pending flag on <em>stream</em>. </p>
<dl class="since_2_22"><dt><b><a class="el" href="since_2_22.html#_since_2_22000032">Since glibmm 2.22:</a></b></dt><dd></dd></dl>
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<a class="anchor" id="a7d9c63eb525827d27f897d6823f719a8"></a><!-- doxytag: member="Gio::IOStream::close" ref="a7d9c63eb525827d27f897d6823f719a8" args="()" -->
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<td class="memname">bool Gio::IOStream::close </td>
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<a class="anchor" id="ae22ea1e4e3cd6db48b5e012f35a2306d"></a><!-- doxytag: member="Gio::IOStream::close" ref="ae22ea1e4e3cd6db48b5e012f35a2306d" args="(const Glib::RefPtr< Cancellable > &cancellable)" -->
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<td class="memname">bool Gio::IOStream::close </td>
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<p>Closes the stream, releasing resources related to it. </p>
<p>This will also closes the individual input and output streams, if they are not already closed.</p>
<p>Once the stream is closed, all other operations will return IO_ERROR_CLOSED. Closing a stream multiple times will not return an error.</p>
<p>Closing a stream will automatically flush any outstanding buffers in the stream.</p>
<p>Streams will be automatically closed when the last reference is dropped, but you might want to call this function to make sure resources are released as early as possible.</p>
<p>Some streams might keep the backing store of the stream (e.g. a file descriptor) open after the stream is closed. See the documentation for the individual stream for details.</p>
<p>On failure the first error that happened will be reported, but the close operation will finish as much as possible. A stream that failed to close will still return IO_ERROR_CLOSED for all operations. Still, it is important to check and report the error to the user, otherwise there might be a loss of data as all data might not be written.</p>
<p>If <em>cancellable</em> is not <code>0</code>, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error IO_ERROR_CANCELLED will be returned. Cancelling a close will still leave the stream closed, but some streams can use a faster close that doesn't block to e.g. check errors.</p>
<p>The default implementation of this method just calls close on the individual input/output streams. </p>
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<tr><td valign="top"></td><td valign="top"><em>cancellable</em> </td><td>Optional <a class="el" href="classGio_1_1Cancellable.html" title="Allows actions to be cancelled.">Cancellable</a> object, <code>0</code> to ignore. </td></tr>
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<dl class="return"><dt><b>Returns:</b></dt><dd><code>true</code> on success, <code>false</code> on failure</dd></dl>
<dl class="since_2_22"><dt><b><a class="el" href="since_2_22.html#_since_2_22000027">Since glibmm 2.22:</a></b></dt><dd></dd></dl>
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<a class="anchor" id="a41451e389068b3a61245b43695186ee6"></a><!-- doxytag: member="Gio::IOStream::close_async" ref="a41451e389068b3a61245b43695186ee6" args="(const SlotAsyncReady &slot, int io_priority=Glib::PRIORITY_DEFAULT)" -->
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<td class="memname">void Gio::IOStream::close_async </td>
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<a class="anchor" id="a289fe0ef58e44117952a2e01985afdd7"></a><!-- doxytag: member="Gio::IOStream::close_async" ref="a289fe0ef58e44117952a2e01985afdd7" args="(const SlotAsyncReady &slot, const Glib::RefPtr< Cancellable > &cancellable, int io_priority=Glib::PRIORITY_DEFAULT)" -->
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<td class="memname">void Gio::IOStream::close_async </td>
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<a class="anchor" id="a205a044f155178460336bd6efd05554c"></a><!-- doxytag: member="Gio::IOStream::close_finish" ref="a205a044f155178460336bd6efd05554c" args="(const Glib::RefPtr< AsyncResult > &result)" -->
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<p>Closes a stream. </p>
<dl><dt><b>Parameters:</b></dt><dd>
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<tr><td valign="top"></td><td valign="top"><em>result</em> </td><td>A <a class="el" href="classGio_1_1AsyncResult.html" title="Provides a base class for implementing asynchronous function results.">AsyncResult</a>. </td></tr>
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<dl class="return"><dt><b>Returns:</b></dt><dd><code>true</code> if stream was successfully closed, <code>false</code> otherwise.</dd></dl>
<dl class="since_2_22"><dt><b><a class="el" href="since_2_22.html#_since_2_22000028">Since glibmm 2.22:</a></b></dt><dd></dd></dl>
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<a class="anchor" id="afab74f0f339afb505556f6cb8b8c2b45"></a><!-- doxytag: member="Gio::IOStream::get_input_stream" ref="afab74f0f339afb505556f6cb8b8c2b45" args="()" -->
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<td class="memname"><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><<a class="el" href="classGio_1_1InputStream.html">InputStream</a>> Gio::IOStream::get_input_stream </td>
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<p>Gets the input stream for this object. </p>
<p>This is used for reading. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>A <a class="el" href="classGio_1_1InputStream.html" title="Base class for implementing streaming input.">InputStream</a>, owned by the <a class="el" href="classGio_1_1IOStream.html">IOStream</a> do not free.</dd></dl>
<dl class="since_2_22"><dt><b><a class="el" href="since_2_22.html#_since_2_22000025">Since glibmm 2.22:</a></b></dt><dd></dd></dl>
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<td class="memname"><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a><<a class="el" href="classGio_1_1OutputStream.html">OutputStream</a>> Gio::IOStream::get_output_stream </td>
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<p>Gets the output stream for this object. </p>
<p>This is used for writing. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>A <a class="el" href="classGio_1_1OutputStream.html" title="Base class for implementing streaming output.">OutputStream</a>, owned by the <a class="el" href="classGio_1_1IOStream.html">IOStream</a> do not free.</dd></dl>
<dl class="since_2_22"><dt><b><a class="el" href="since_2_22.html#_since_2_22000026">Since glibmm 2.22:</a></b></dt><dd></dd></dl>
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<td class="memname">const GIOStream* Gio::IOStream::gobj </td>
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<p>Provides access to the underlying C GObject. </p>
<p>Reimplemented from <a class="el" href="classGlib_1_1ObjectBase.html#a778a94181132976bbfb0519793f3b32e">Glib::ObjectBase</a>.</p>
<p>Reimplemented in <a class="el" href="classGio_1_1FileIOStream.html#acd384df600b1aea26bd10ca2e74f1b21">Gio::FileIOStream</a>.</p>
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<a class="anchor" id="a6e8d13f8095555cecbe0d59f1542893f"></a><!-- doxytag: member="Gio::IOStream::gobj" ref="a6e8d13f8095555cecbe0d59f1542893f" args="()" -->
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<td class="memname">GIOStream* Gio::IOStream::gobj </td>
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<p>Provides access to the underlying C GObject. </p>
<p>Reimplemented from <a class="el" href="classGlib_1_1ObjectBase.html#a4c6efc18be8cb9c56e58fc0bd20fafbe">Glib::ObjectBase</a>.</p>
<p>Reimplemented in <a class="el" href="classGio_1_1FileIOStream.html#a382fe1830e5e347db4ae0d941398c0df">Gio::FileIOStream</a>.</p>
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<td class="memname">GIOStream* Gio::IOStream::gobj_copy </td>
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<p>Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. </p>
<p>Reimplemented in <a class="el" href="classGio_1_1FileIOStream.html#a2661e78434e66d48a54aa67ddd4d4e53">Gio::FileIOStream</a>.</p>
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<p>Checks if a stream has pending actions. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd><code>true</code> if <em>stream</em> has pending actions.</dd></dl>
<dl class="since_2_22"><dt><b><a class="el" href="since_2_22.html#_since_2_22000030">Since glibmm 2.22:</a></b></dt><dd></dd></dl>
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<a class="anchor" id="a32d887d5d205566fe1cdfd0bf4176a8d"></a><!-- doxytag: member="Gio::IOStream::is_closed" ref="a32d887d5d205566fe1cdfd0bf4176a8d" args="() const " -->
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<p>Checks if a stream is closed. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd><code>true</code> if the stream is closed.</dd></dl>
<dl class="since_2_22"><dt><b><a class="el" href="since_2_22.html#_since_2_22000029">Since glibmm 2.22:</a></b></dt><dd></dd></dl>
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<td class="memname">bool Gio::IOStream::set_pending </td>
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<p>Sets <em>stream</em> to have actions pending. </p>
<p>If the pending flag is already set or <em>stream</em> is closed, it will return <code>false</code> and set <em>error</em>. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd><code>true</code> if pending was previously unset and is now set.</dd></dl>
<dl class="since_2_22"><dt><b><a class="el" href="since_2_22.html#_since_2_22000031">Since glibmm 2.22:</a></b></dt><dd></dd></dl>
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<hr/><h2>Friends And Related Function Documentation</h2>
<a class="anchor" id="a13101385680c3857e7027d78e1f6259a"></a><!-- doxytag: member="Gio::IOStream::wrap" ref="a13101385680c3857e7027d78e1f6259a" args="(GIOStream *object, bool take_copy=false)" -->
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<td class="memname"><a class="el" href="classGlib_1_1RefPtr.html">Glib::RefPtr</a>< <a class="el" href="classGio_1_1IOStream.html">Gio::IOStream</a> > wrap </td>
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<td class="paramtype">GIOStream * </td>
<td class="paramname"> <em>object</em>, </td>
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<td>)</td>
<td></td><td></td><td><code> [related]</code></td>
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<p>A <a class="el" href="namespaceGlib.html#a671306f4a3a0cae5ab4d7a9d54886592">Glib::wrap()</a> method for this object. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>object</em> </td><td>The C instance. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>take_copy</em> </td><td>False if the result should take ownership of the C instance. True if it should take a new copy or ref. </td></tr>
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<dl class="return"><dt><b>Returns:</b></dt><dd>A C++ instance that wraps this C instance. </dd></dl>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>giomm/iostream.h</li>
</ul>
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